Haruka has a secret that she cannot tell her husband. Due to the stress of being sexless with her husband, who is devoted to her work, she has had a physical relationship with her brother-in-law. Her brother-in-law visited her house and devoured Haruka's body in anticipation of her husband's absence, using her excuses as her one-time intention. At first she was Haruka who refused, but her pleasure became a habit as she repeated her number of times.
